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LT1111_15 Datasheet, PDF (16/16 Pages) Linear Technology – Micropower DC/DC Converter Adjustable and Fixed 5V, 12V
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LT1111
TYPICAL APPLICATI S
High Power, Low Quiescent Current Step-Down Converter
VIN
8V TO 18V
0.22Ω
BAT54
V IN
ILIM
SW1
LT1111
FB
GND
SW2
MTM20P08
L1*
10µH, 3A
+
2k
51Ω
MBRD320
220µF
2N3904
1N4148
121k
40.2k
* L1 = SUMIDA CDR105-100M
5V
500mA
OPERATE STANDBY
LT1111 • TA20
RELATED PARTS
PART NUMBER
LT1070/LT1070HV
LT1071/LT1071HV
LT1072/LT1072HV
LT1082
LT1107
LT1170/LT1170HV
LT1171/LT1171HV
LT1172/LT1172HV
LT1307/LT1307B
LT1317/LT1317B
LT1370/LT1370HV
LT1371/LT1371HV
DESCRIPTION
5A ISW, 40kHz, High Efficiency
Switching Regulator
2.5A ISW, 40kHz, High Efficiency
Switching Regulator
1.25A ISW, 40kHz, High Efficiency
Switching Regulator
1A ISW, 60kHz, High Efficiency
Switching Regulator
1A ISW, 63kHz, High Efficiency
Switching Regulator
5A ISW, 100kHz, High Efficiency
Switching Regulator
2.5A ISW, 100kHz, High Efficiency
Switching Regulator
1.25A ISW, 100kHz, High Efficiency
Switching Regulator
600mA ISW, 600kHz, High Efficiency
Step-Up Switching Regulator
660mA ISW, 600kHz, High Efficiency
Step-Up Switching Regulator
6A ISW, 500kHz, High Efficiency
Switching Regulator
3A ISW, 500kHz, High Efficiency
Switching Regulator
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 q FAX: (408) 434-0507 q www.linear.com
COMMENTS
VIN = 3V to 40V/60V, VOUT = 65V/75V, IQ = 6mA, ISD = <50µA, Can be Used for
Buck, Boost, Inverting Applications, TO220-5 Package
VIN = 3V to 40V/60V, VOUT = 65V/75V, IQ = 6mA, ISD = <50µA, Can be Used for
Buck, Boost, Inverting Applications, N8, S8, S16, TO220-5 Packages
VIN = 3V to 40V/60V, VOUT = 65V/75V, IQ = 6mA, ISD = <50µA, Can be Used for
Buck, Boost, Inverting Applications, N8, S8, S16, TO220-5 Packages
VIN = 3V to 75V, VOUT = 100V, IQ = 4.5mA, ISD = ≤120µA, Can be Used for
Buck, Boost, Inverting Applications, DD, N8, TO220-5 Packages
VIN = 2V to 30V, VOUT = 34V, IQ = 320µA, Can be Used for
Buck, Boost, Inverting Applications, N8, S8 Packages
VIN = 3V to 40V/60V, VOUT = 65V/75V, IQ = 6mA, ISD = <50µA, Can be Used for
Buck, Boost, Inverting Applications, DD, N8, S16, TO220-5 Packages
VIN = 3V to 40V/60V, VOUT = 65V/75V, IQ = 6mA, ISD = <50µA, Can be Used for
Buck, Boost, Inverting Applications, DD, N8, S16, TO220-5 Packages
VIN = 3V to 40V/60V, VOUT = 65V/75V, IQ = 6mA, ISD = <100µA, Can be Used for
Buck, Boost, Inverting Applications, DD, N8, S16, TO220-5 Packages
VIN = 1V to 12V, VOUT = 28V, IQ = 50µA/1mA, ISD = ≤1µA
Ideal for Single Cell Applications, Low Battery Detect, MS8, N8, S8 Packages
VIN = 1.5V to 12V, VOUT = 28V, IQ = 100µA/4.8mA, ISD = ≤30µA/28µA
Low Battery Detect, MS8, S8 Packages
VIN = 2.7V to 30V, VOUT = 35V/42V, IQ = 4.5mA, ISD = <12µA, Can be Used for
Buck, Boost, Inverting Applications, DD, TO220-7 Packages
VIN = 2.7V to 30V, VOUT = 35V/42V, IQ = 4mA, ISD = <12µA, Can be Used for
Buck, Boost, Inverting Applications, DD, S20, TO220-7 Packages
1111fd
LT/TP 0103 1K REV D • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1994